According to what Gu Youyou knew, there was an ancient rule regarding marriage that forbade people with the same surname from marrying each other. However, this rule varied across different eras. In certain periods, it was permissible for members of the Imperial Family and nobility to intermarry despite having the same surname. As a result, the current Emperor and Empress were of the same surname.
It was said that the Emperor had to go through a great deal of trouble to ascend from the position of Crown Prince to the Dragon Throne. Zhuzhao Country has a distinctive feature: there are an unusually large number of people with the surname Jin in the north, once a great clan many years ago. But after years of changes, it was difficult to distinguish who belonged to which branch of the family.
